A study was conducted near Princeton, KY to determine if a polymer (AVAIL®) applied to diammonium phosphate (DAP, 18- 46-0) and mono ammonium phosphate (MAP, 11-52-0) would increase (P) phosphorus use efficiency in fescue production on a low P testing soil, when compared to an untreated phosphate fertilizer. AVAIL® (Specialty Fertilizer Products, Belton, MO) is presently being sold in Kentucky as a product to improve phosphorus fertilizer efficiency.
Murdock, Lloyd W.; Olson, John James; and Olson, Gene, "Effect of AVAIL® Polymer Applied to Phosphorus Fertilizers on Dry Matter Production and P uptake of Fescue at Princeton, KY" (2007). Soil Science News and Views. 185.